The left ventricle is one of four chambers (two atria and two ventricles) in the human heart. It receives oxygenated blood from the left atrium via the mitral valve, and pumps it into the aorta via the aortic valve.
Read more about Left Ventricle: Shape, Development, Function, Pumping Volume, Additional Images
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“Historically and politically, the petit-bourgeois is the key to the century.... The bourgeois and proletariat classes have become abstractions: the petite-bourgeoisie, in contrast, is everywhere, you can see it everywhere, even in the areas of the bourgeois and the proletariat, whats left of them.”
—Roland Barthes (19151980)
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